Inhibitors of Bruton's tyrosine kinase

Abstract

Disclosed herein are compounds of Formula (A) that form covalent bonds with Bruton's tyrosine kinase (Btk). Also described are irreversible inhibitors of Btk. Methods for the preparation of the compounds are disclosed. Also disclosed are pharmaceutical compositions that include the compounds. Methods of using the Btk inhibitors are disclosed, alone or in combination with other therapeutic agents, for the treatment of autoimmune diseases or conditions, heteroimmune diseases or conditions, cancer, including lymphoma, and inflammatory diseases or conditions.

What is claimed is: 
     
       1. A method of treating pancreatic cancer comprising administering to a subject in need thereof a therapeutically effective amount of a compound having the structure of Formula (A): 
       
         
           
           
               
               
           
         
       
       wherein:
 A is independently selected from N or CR 5 ; 
 R 1  is H, L 2 -(substituted or unsubstituted alkyl), L 2 -(substituted or unsubstituted cycloalkyl), L 2 -(substituted or unsubstituted alkenyl), L 2 -(substituted or unsubstituted cycloalkenyl), L 2 -(substituted or unsubstituted heterocycle), L 2 -(substituted or unsubstituted heteroaryl), or L 2 -(substituted or unsubstituted aryl), where L 2  is a bond, O, S, —S(═O), —S(═O) 2 , C(═O), -(substituted or unsubstituted C 1 -C 6  alkyl), or -(substituted or unsubstituted C 2 -C 6  alkenyl); 
 R 2  and R 3  are independently selected from H, lower alkyl and substituted lower alkyl; 
 R 4  is L 3 -X-L 4 -G, wherein,
 L 3  is optional, and when present is a bond, optionally substituted or unsubstituted alkyl, optionally substituted or unsubstituted cycloalkyl, optionally substituted or unsubstituted alkenyl, optionally substituted or unsubstituted alkynyl; 
 X is optional, and when present is a bond, O, —C(═O), S, —S(═O), —S(═O) 2 , —NH, —NR 9 , —NHC(O), —C(O)NH, —NR 9 C(O), —C(O)NR 9 , —S(═O) 2 NH, —NHS(═O) 2 , —S(═O) 2 NR 9 —, —NR 9 S(═O) 2 , —OC(O)NH—, —NHC(O)O—, —OC(O)NR 9 —, —NR 9 C(O)O—, —CH═NO—, —ON═CH—, —NR 10 C(O)NR 10 —, heteroaryl, aryl, —NR 10 C(═NR 11 )NR 10 —, —NR 10 C(═NR 11 )—, —C(═NR 11 )NR 10 —, —OC(═NR 11 )—, or —C(═NR 11 )O—; 
 L 4  is optional, and when present is a bond, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted heterocycle; 
 or L 3 , X and L 4  taken together form a nitrogen containing heterocyclic ring; 
 G is 
 
 
       
         
           
           
               
               
           
         
       
       wherein,
     R 6 , R 7  and R 8  are independently selected from among H, lower alkyl or substituted lower alkyl, lower heteroalkyl or substituted lower heteroalkyl, substituted or unsubstituted lower cycloalkyl, and substituted or unsubstituted lower heterocycloalkyl;     
 R 5  is H, halogen, -L 6 -(substituted or unsubstituted C 1 -C 3  alkyl), -L 6 -(substituted or unsubstituted C 2 -C 4  alkenyl), -L 6 -(substituted or unsubstituted heteroaryl), or -L 6 -(substituted or unsubstituted aryl), wherein L 6  is a bond, O, S, —S(═O), S(═O) 2 , NH, C(O), —NHC(O)O, —OC(O)NH, —NHC(O), or —C(O)NH; 
 each R 9  is independently selected from among H, substituted or unsubstituted lower alkyl, and substituted or unsubstituted lower cycloalkyl; 
 each R 10  is independently H, substituted or unsubstituted lower alkyl, or substituted or unsubstituted lower cycloalkyl; or 
 two R 10  groups can together form a 5-, 6-, 7-, or 8-membered heterocyclic ring; or 
 R 10  and R 11  can together form a 5-, 6-, 7-, or 8-membered heterocyclic ring; or 
 each R 11  is independently selected from H, —S(═O) 2 R 8 , —S(═O) 2 NH 2 , —C(O)R 8 , —CN, —NO 2 , heteroaryl, or heteroalkyl; or a pharmaceutically acceptable salt thereof. 
 
     
     
       2. The method of  claim 1 , wherein the compound has the structure: 
       
         
           
           
               
               
           
         
       
     
     
       3. The method of  claim 1 , wherein A is N; R 1  is L 2 -substituted aryl; and L 2  is a bond. 
     
     
       4. The method of  claim 1 , wherein R 2  and R 3  are independently H. 
     
     
       5. The method of  claim 1 , wherein the compound of Formula (A) has the structure of Formula (B): 
       
         
           
           
               
               
           
         
       
       wherein:
 Y is alkyl or substituted alkyl, or a 4-, 5-, or 6-membered cycloalkyl ring; 
 each R a  is independently H, halogen, —CF 3 , —CN, —NO 2 , OH, NH 2 , -L a -(substituted or unsubstituted alkyl), -L a -(substituted or unsubstituted alkenyl), -L a -(substituted or unsubstituted heteroaryl), or -L a -(substituted or unsubstituted aryl), wherein L a  is a bond, O, S, —S(═O), —S(═O) 2 , NH, C(O), CH 2 , —NHC(O)O, —NHC(O), or —C(O)NH; 
 G is 
 
       
         
           
           
               
               
           
         
       
       wherein,
 R 6 , R 7  and R 8  are independently selected from among H, lower alkyl or substituted lower alkyl, lower heteroalkyl or substituted lower heteroalkyl, substituted or unsubstituted lower cycloalkyl, and substituted or unsubstituted lower heterocycloalkyl;
 R 12  is H or lower alkyl; or 
 
 Y and R 12  taken together form a 4-, 5-, or 6-membered heterocyclic ring; or a pharmaceutically acceptable salt thereof. 
 
     
     
       6. The method of  claim 5 , wherein Y and R 12  taken together form a 6-membered heterocyclic ring. 
     
     
       7. The method of  claim 5 , wherein the compound of Formula (B) has the structure of Formula (C): 
       
         
           
           
               
               
           
         
         Y is alkyl or substituted alkyl, or a 4-, 5-, or 6-membered cycloalkyl ring; 
         R 12  is H or lower alkyl; or 
         Y and R 12  taken together form a 4-, 5-, or 6-membered heterocyclic ring; 
         G is 
       
       
         
           
           
               
               
           
         
       
       wherein, 
       R 6 , R 7  and R 8  are independently selected from among H, lower alkyl or substituted lower alkyl, lower heteroalkyl or substituted lower heteroalkyl, substituted or unsubstituted lower cycloalkyl, and substituted or unsubstituted lower heterocycloalkyl; or a pharmaceutically acceptable salt thereof. 
     
     
       8. The method of  claim 7 , wherein Y and R 12  taken together form a 4-, 5-, or 6-membered heterocyclic ring. 
     
     
       9. The compound of  claim 7 , wherein G is 
       
         
           
           
               
               
           
         
       
     
     
       10. The compound of  claim 7 , wherein R 6 , R 7 , and R 8  are independently H. 
     
     
       11. A method of treating pancreatic cancer comprising administering to a subject in need thereof a therapeutically effective amount of a compound having the structure of Formula (D): 
       
         
           
           
               
               
           
         
       
       wherein
 L a  is CH 2 , O, NH or S; 
 Ar is an optionally substituted aromatic carbocycle or an aromatic heterocycle; 
 Y is an optionally substituted alkyl, heteroalkyl, carbocycle, heterocycle, or combination thereof; 
 Z is C(O), OC(O), NHC(O), C(S), S(O) x , OS(O) x , NHS(O) x , where x is 1 or 2; and 
 R 6 , R 7 , and R 8  are independently selected from H, alkyl, heteroalkyl, carbocycle, heterocycle, or combinations thereof. 
 
     
     
       12. The method of  claim 11 , wherein La is O, Ar is an aromatic carbocycle, Y is heterocycle, Z is C(O), and R 6 , R 7 , and R 8  are independently H.